admin: Display last active time of users in admin users table.

Fixes: #2097.

frontend_tests/node_tests/activity.js

@@ -283,11 +283,11 @@ global.compile_template('user_presence_rows');
     activity.set_presence_info(presences, base_time);
 
     assert.deepEqual(activity.presence_info[alice.user_id],
-        { status: 'active', mobile: false}
+        { status: 'active', mobile: false, last_active: 500}
     );
 
     assert.deepEqual(activity.presence_info[fred.user_id],
-        { status: 'idle', mobile: false}
+        { status: 'idle', mobile: false, last_active: 500}
     );
 }());
 

static/js/activity.js

@@ -400,10 +400,14 @@ exports.update_huddles = function () {
 
 function status_from_timestamp(baseline_time, presence) {
     var status = 'offline';
+    var last_active = 0;
     var mobileAvailable = false;
     var nonmobileAvailable = false;
     _.each(presence, function (device_presence, device) {
         var age = baseline_time - device_presence.timestamp;
+        if (last_active < device_presence.timestamp) {
+            last_active = device_presence.timestamp;
+        }
         if (is_mobile(device)) {
             mobileAvailable = device_presence.pushable || mobileAvailable;
         }
@@ -432,7 +436,9 @@ function status_from_timestamp(baseline_time, presence) {
             }
         }
     });
-    return {status: status, mobile: !nonmobileAvailable && mobileAvailable };
+    return {status: status,
+            mobile: !nonmobileAvailable && mobileAvailable,
+            last_active: last_active };
 }
 
 // For testing

static/js/admin.js

@@ -134,12 +134,21 @@ function populate_users(realm_people_data) {
     });
     bots_table.append(bots_table_html);
 
-    var users_table_html = "";
     _.each(active_users, function (user) {
-        var user_html = templates.render("admin_user_list", {user: user});
-        users_table_html = users_table_html.concat(user_html);
+        var activity_rendered;
+        var row = $(templates.render("admin_user_list", {user: user}));
+        if (people.is_current_user(user.email)) {
+            activity_rendered = timerender.render_date(new XDate());
+        } else if (activity.presence_info[user.user_id]) {
+            // XDate takes number of milliseconds since UTC epoch.
+            var last_active = activity.presence_info[user.user_id].last_active * 1000;
+            activity_rendered = timerender.render_date(new XDate(last_active));
+        } else {
+            activity_rendered = $("<span></span>").text(i18n.t("Never"));
+        }
+        row.find(".last_active").append(activity_rendered);
+        users_table.append(row);
     });
-    users_table.append(users_table_html);
 
     var deactivated_table_html = "";
     _.each(deactivated_users, function (user) {

static/styles/settings.css

@@ -1059,3 +1059,7 @@ input[type=text]#settings_search {
 #muted_topics_table tbody {
     border-bottom: none;
 }
+
+#admin_users_table .last_active {
+    width: 15%;
+}

static/templates/admin_user_list.handlebars

@@ -10,17 +10,22 @@
     <td>
       <span class="owner">{{bot_owner}}</span>
     </td>
+  {{else}}
+    <td class="last_active">
+    </td>
   {{/if}}
   <td>
-    {{#if is_active}}
-      <button class="button deactivate btn-danger">
-        {{t "Deactivate" }}
-      </button>
-    {{else}}
-      <button class="button reactivate btn-warning">
-        {{t "Reactivate" }}
-      </button>
-    {{/if}}
+    <span class="user-status-settings">
+      {{#if is_active}}
+        <button class="button deactivate btn-danger">
+          {{t "Deactivate" }}
+        </button>
+      {{else}}
+        <button class="button reactivate btn-warning">
+          {{t "Reactivate" }}
+        </button>
+      {{/if}}
+    </span>
     <span class="user-admin-settings">
       {{#if is_active_human}}
         {{#if is_admin}}

static/templates/settings/user-list-admin.handlebars

@@ -5,6 +5,7 @@
   <tbody id="admin_users_table" class="admin_user_table">
     <th class="wrapped-cell">{{t "Name" }}</th>
     <th>{{t "Email" }}</th>
+    <th class="last_active">{{t "Last active" }}</th>
     <th>{{t "Actions" }}</th>
   </tbody>
 </table>